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Quantum-well intermixing for the control of second-order nonlinear effects in AlGaAs multiple-quantum-well waveguides
- Source :
- Optics Letters; November 1997, Vol. 22 Issue: 21 p1600-1602, 3p
- Publication Year :
- 1997
-
Abstract
- We present experimental evidence to demonstrate the feasibility of a promising new quasi-phase-matching technique in AlGaAs multiple-quantum-well waveguides. Non-phase-matched second-harmonic-generation measurements indicate that, for sub-half-bandgap excitation near 1.5??µm, quantum-well intermixing by impurity-free vacancy disordering results in a reduction of the nonlinear susceptibility χzxy2∼340 pm/V by 17%.?Relatively low intermixed waveguide losses, and the high spatial resolution of the impurity-free vacancy disordering process, suggest that periodic intermixing along the direction of propagation should lead to useful frequency-conversion efficiencies.
Details
- Language :
- English
- ISSN :
- 01469592 and 15394794
- Volume :
- 22
- Issue :
- 21
- Database :
- Supplemental Index
- Journal :
- Optics Letters
- Publication Type :
- Periodical
- Accession number :
- ejs20950609